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$312+ Cheap flights from Ontario (ONT) to Singapore

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/15. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — SIN
Jan 7 — Jan 141
Wed 1/7
Wed 1/14
1 adult, Economy
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Cheap flight deals from Ontario to Singapore

Cheapest flights from Ontario to Singapore
Explore the most affordable flight options available from Ontario to Singapore. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 8, 2025.

This United Airlines deal was found by Cheapflights users on 12/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/86:41 pmONT - SIN
1 stop21h 19mUnited Airlines
Sun 1/2510:10 amSIN - ONT
1 stop23h 33mUnited Airlines
Deal found 12/7$784
This United Airlines deal was found by Cheapflights users on 12/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/75:05 amONT - SIN
2 stops34h 55mUnited Airlines
Thu 1/2210:10 amSIN - ONT
1 stop23h 33mUnited Airlines
Deal found 12/7$788
This Delta deal was found by Cheapflights users on 12/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/276:00 amONT - SIN
2 stops31h 00mDelta
Thu 1/110:30 pmSIN - ONT
2 stops34h 38mDelta
Deal found 12/4$897
This American Airlines deal was found by Cheapflights users on 12/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/77:03 amONT - SIN
2 stops31h 32mAmerican Airlines
Thu 1/222:20 amSIN - ONT
2 stops31h 02mAmerican Airlines
Deal found 12/7$913
This American Airlines deal was found by Cheapflights users on 12/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/76:00 amONT - SIN
2 stops32h 35mAmerican Airlines
Tue 1/208:15 amSIN - ONT
2 stops26h 30mAmerican Airlines
Deal found 12/7$915
This United Airlines deal was found by Cheapflights users on 12/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/56:41 pmONT - SIN
1 stop21h 19mUnited Airlines
Mon 12/810:10 amSIN - ONT
2 stops26h 32mUnited Airlines
Deal found 12/5$976
This United Airlines deal was found by Cheapflights users on 12/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/106:41 pmONT - SIN
1 stop21h 19mUnited Airlines
Sat 1/2410:10 amSIN - ONT
1 stop18h 07mUnited Airlines
Deal found 12/7$1,040
This American Airlines deal was found by Cheapflights users on 12/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/76:00 amONT - SIN
2 stops32h 35mAmerican Airlines
Sat 1/242:20 amSIN - ONT
2 stops32h 25mAmerican Airlines
Deal found 12/7$1,076
This Delta deal was found by Cheapflights users on 12/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/266:38 amONT - SIN
2 stops30h 22mDelta
Sat 1/310:40 amSIN - ONT
2 stops28h 09mDelta
Deal found 12/4$1,250
This Delta deal was found by Cheapflights users on 12/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/86:00 amONT - SIN
2 stops26h 10mDelta
Wed 1/211:35 amSIN - ONT
2 stops37h 16mDelta
Deal found 12/7$1,278
This Korean Air deal was found by Cheapflights users on 12/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/86:00 amONT - SIN
2 stops31h 00mKorean Air
Sun 1/251:35 amSIN - ONT
2 stops28h 21mKorean Air
Deal found 12/7$1,284
This United Airlines deal was found by Cheapflights users on 12/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/255:05 amONT - SIN
2 stops47h 10mUnited Airlines
Sun 12/2810:20 pmSIN - ONT
1 stop27h 41mUnited Airlines
Deal found 12/5$1,290

Find flight deals from Ontario to Singapore

Keep the following information in mind while searching for Ontario to Singapore flight deals. Data was last updated December 8, 2025.

Most accurate provider

Justfly.com
3 stars

Most trusted provider

Justfly.com
3 stars

Round-trip from

$633
(Delta)

One-way from

$312
(Delta)

Popular in

December

Cheapest in

September

Average price

$1,470
Provider with most accurate pricing for Los Angeles-Singapore Changi flight deals.
Search Deals
Provider most trusted by Cheapflights users for Los Angeles-Singapore Changi flights.
Search Deals
From Ontario to Singapore
Search Deals
One-way flight from Ontario to Singapore
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($164 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($49 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Singapore that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 8, 2025.
Use the filters below to find and compare flights from Ontario to Singapore that are best for you.

Fly from

Ontario

Fly to

Singapore

Route

Depart

Return

Price

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Mon 2/9

1:53 pm-8:00 am

1 stop26h 07m

Singapore Changi

Mon 2/16

10:10 am-12:38 pm

1 stop18h 28m

$784

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Tue 1/20

1:53 pm-8:00 am

1 stop26h 07m

Singapore Changi

Mon 3/2

10:10 am-12:38 pm

1 stop18h 28m

$784

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Tue 2/17

1:45 pm-8:00 am

2 stops26h 15m

Singapore Changi

Thu 2/26

10:10 am-12:38 pm

1 stop18h 28m

$788

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Sat 12/27

6:00 am-5:00 am

2 stops31h 00m

Singapore Changi

Sat 1/3

10:40 am-10:49 pm

2 stops28h 09m

$897

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Sun 1/11

6:00 am-8:15 pm

1 stop22h 15m

Singapore Changi

Fri 1/16

10:10 am-5:43 pm

1 stop23h 33m

$922

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Tue 2/17

6:10 am-8:15 pm

1 stop22h 05m

Singapore Changi

Sat 2/28

10:10 am-5:41 pm

1 stop23h 31m

$922

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Sat 3/7

6:37 pm-8:00 am

1 stop21h 23m

Singapore Changi

Sun 3/15

10:10 am-8:57 pm

2 stops25h 47m

$976

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Wed 12/10

6:41 pm-8:00 am

1 stop21h 19m

Singapore Changi

Sat 1/24

10:10 am-12:17 pm

1 stop18h 07m

$1,040

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Wed 12/10

6:41 pm-8:00 am

1 stop21h 19m

Singapore Changi

Mon 1/26

10:10 am-5:43 pm

1 stop23h 33m

$1,040

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Fri 12/12

6:00 am-8:15 pm

1 stop22h 15m

Singapore Changi

Wed 1/21

10:10 am-5:43 pm

1 stop23h 33m

$1,040

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/5

Showing 1-10 of 21 results
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Best time to book a flight from Ontario to Singapore

Have a flexible travel schedule? Discover the best time to fly to Singapore from Ontario with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Ontario to Singapore

What is the cheapest month to book a flight from Ontario to Singapore?

Currently, February is the cheapest month in which you can book a flight from Ontario to Singapore (average of $589). Flying from Ontario to Singapore in December is currently the most expensive (average of $789). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from ONT to SG?

Find hourly flight availability from Ontario to Singapore. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 8, 2025.

A simple way to save on the total cost of your ticket is to fly from Ontario to Singapore in the morning. If you’re flexible enough to do this you can expect to save up to 22% on your trip compared to booking a flight at noon.

Reviews of airlines servicing Singapore

Get insights into the airlines that provide service to Singapore. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Singapore. Reviews last updated December 8, 2025.
See what other customers who have flown with STARLUX Airlines, China Airlines, and United Airlines from Ontario to Singapore have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
STARLUX Airlines
8.9
Very good
243 reviews

Overall

8.9

Boarding

8.9

Comfort

8.9

Entertainment

8.9

Food

8.7

Crew

9.2

Reviews

1 / 9
10.0
Excellent

Chad,Nov 2025

TPE - SEA

Starlux Airlines was amazing. No complaints on anything with them
STARLUX Airlines
8.9
Very good
243 reviews
STARLUX Airlines
8.9
Very good
243 reviews

Overall

8.9

Boarding

8.9

Comfort

8.9

Entertainment

8.9

Food

8.7

Crew

9.2

Reviews

1 / 9
10.0
Excellent

Chad,Nov 2025

TPE - SEA

Starlux Airlines was amazing. No complaints on anything with them
China Airlines
8.2
Very good
788 reviews
STARLUX Airlines
8.9
Very good
243 reviews

Overall

8.9

Boarding

8.9

Comfort

8.9

Entertainment

8.9

Food

8.7

Crew

9.2

Reviews

1 / 9
10.0
Excellent

Chad,Nov 2025

TPE - SEA

Starlux Airlines was amazing. No complaints on anything with them
United Airlines
7.4
Good
9,078 reviews
STARLUX Airlines
8.9
Very good
243 reviews

Overall

8.9

Boarding

8.9

Comfort

8.9

Entertainment

8.9

Food

8.7

Crew

9.2

Reviews

1 / 9
10.0
Excellent

Chad,Nov 2025

TPE - SEA

Starlux Airlines was amazing. No complaints on anything with them

Related info for your journey

Find useful and relevant information for your journey from Ontario to Singapore. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Ontario to Singapore?

    If you book a flight to Singapore from Ontario, you will be flying from Ontario, which is the city’s only airport. Ontario (ONT) is located 3.1 mi from the center of Ontario.

  • How long is the flight from Ontario to Singapore?

    A quick flight from Ontario to Singapore can take about 26h 07m. United Airlines provides one of the quickest options available for as low as $784. There are 8791 mi between Ontario and Singapore. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • Can I find deals for flights from Ontario to Singapore that include hotel bookings?

    Yes. In addition to deals on Ontario to Singapore flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to Singapore?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Singapore.

  • Can I find deals for business class flights from Ontario to Singapore?

    Yes. Cheapflights offers flight deals from Ontario to Singapore by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Ontario to Singapore?

    Currently, February is the cheapest month in which you can book a flight from Ontario to Singapore (average of $589). Flying from Ontario to Singapore in December is currently the most expensive (average of $789). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Top 3 airlines flying from Ontario to Singapore

Discover the top 3 airlines that operate flights from Ontario to Singapore. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 8, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$783Average$1,189FlexibilityNo cancel feeOn-time69%
China AirlinesCheapest$964Average$1,046FlexibilityNo cancel feeOn-time70%
STARLUX AirlinesCheapest$981Average$1,373FlexibilityNo cancel feeOn-timeN/A

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